If an alchemist can infuse a poison or a potion into her weapon, then he should be able to infuse a bomb, too.
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Exploding
Aura faint transmutation CL 3rd
Price +1 bonus; Weight —
This is an enchantment favored by goblin alchemists. An exploding weapon is similar to an injecting weapon, except that its reservoir can hold up the reagents normally used to make one alchemical bomb. The alchemist creating the bomb can apply one of the following discoveries to it: acid bomb, anarchic bombs, axiomatic bombs, boneshard bomb, concussive bomb, force bomb, frost bomb, healing bomb, hellfire bomb, holy bombs, profane bomb, scrap bomb, shock bomb, or void bomb. The selected discovery only alters the bomb’s damage type, without other effects. When the wielder (who can be a different person from the alchemist who charged the bomb into the weapon) activates the reagents as a swift action, the weapon deals +1d6 fire damage with a successful hit (or damage of another type depending on an applied discovery) for a number of rounds equal to the number of d6 of damage the charged bomb would have normally dealt. On a critical hit, the wielder can choose to have the weapon discharge all the remaining bomb damage at a time against the hit creature. Unlike injecting weapons, weapons of any type may be granted the exploding quality. Filling or refilling the weapon’s reservoir is a full-round action.
Construction
Requirements Craft Magic Arms and Armor, creator must be an alchemist with the fire brand discovery; Price —